culbertson



(ModeL) I J. W. OULBERTSON.

ARTIFICIAL EAR DRUM.

No. 270,284. Patented Jan. 9,1883.

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PATENT OFFICE.

JOHN IV. UULBERTSON, ()l INDIANAPOLIS, INDIANA.

ARTIFICIAL EAR-DRUM.

SPECIFICATION forming part of Letters Patent No. 270,284, dated January 9, 18 3.

Application filed June 20, 1882.

(Model.)

To all whom it may concern:

Be it known that I, JOHN W. GULBER'rsoN, a citizen of the United States, residing at In; diauapolis, in the county of Marion and State 5 of Indiana, have invented a new and useful Artificial Ear-Drum or Microphone, of which the following is a specification.

III Iy invention relates to a microphone or 'artificial ear-drum consisting; of a diaphragm or surface of suitable material stretched across the outer ear (or held by a properly-curved support) to receive the sound-waves that are conducted by a rod to the bulb resting on the bottom of the external ear, and conveying the sound-vibrations to the essential organs of hearing; and the object ofmyinvention is to provide a device for relieving deafness and to 1 intensify sound-vibrations. This object I accomplish by the device illustrated in the nocompanying drawings, in whichit Figure 1 represents a bottom view of the vibrating membrane with the rod and bulb. Figs. 2 and 3 represent side or sectional views E is inserted in the ear and brought in contact with the tympanic membrane, or used in place thereof W hen said membrane is destroyed by disease, thus forming an artificial membrane, by means of which sound-vibrations are communicated to the tympanum or to the conducting apparatus of the organs of hearing. Said tluid or solid bulb and rod, when used alone, may be inserted and used as an artificial tympanic membrane when the natural one is ruptured or destroyed.

The operation of my device is as follows: \Vhen the diaphragm B is vibrated its motion is conveyed to the bulb E by the rod 0, and the vibrations of the bulb E are communicated to the organs of hearing.

In some cases the adjustable rod 1) may be used as a support for holding the rod U in position; but it may be dispensed with.

What I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the diaphragm B, the rod 0 and solid or tluid bulb E, as and for the purpose specified.

2. In combination, the diaphragm B, rod 0, solid or fluid bulb E, and adjustable support D, as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two sulr scribing WIIZI'IQSSGS.

JOHN W. (JULBERTSON.

Witnesses GEO. H. BENNETT, AUGUSTUS B. YOUNG. 

